A law school I'm applying to has this as a description for whether to attach an addendum to an application:

"We encourage you to provide any relevant information that may be helpful to us in making an informed decision on your application. Any information that you believe to be relevant to your application is appropriate."

I'm debating between adapting my personal statement to be curtailed to each law school I apply to, or to attach a longer "Why X Law School" statement in my addendum to my top-choice law schools. Attaching the addendum would allow me to get more in depth (as opposed to a personal statement which would be more brief) about why a specific law school would truly help me. Basically, I'm asking is it appropriate to, and if so, should I I include a "Why X Law School" statement as an addendum?